Generally, a download manager enables downloading of large files or multiples files in one session.Many web browsers, such as Internet Explorer 9, include a download manager.Stand-alone download managers also are available, including the Microsoft Download Manager.

if you do not have a download manager installed, and still want to download the file(s) you've chosen, please note:

You may not be able to download multiple files at the same time.In this case, you will have to download the files individually.(You would have the opportunity to download individual files on the "Thank you for downloading" page after completing your download.)

Files larger than 1 GB may take much longer to download and might not download correctly.

You might not be able to pause the active downloads or resume downloads that have failed.

The Microsoft Download Manager solves these potential problems.It gives you the ability to download multiple files at one time and download large files quickly and reliably.It also allows you to suspend active downloads and resume downloads that have failed.

Windows PowerShell 3.0
Some of the new features in Windows PowerShell 3.0 include:

Windows PowerShell Workflow
Windows PowerShell Workflow lets IT pros and developers apply the benefits of Windows Workflow Foundation to the automation capabilities of Windows PowerShell. Workflows allow administrators to perform long-running tasks which can be made repeatable, frequent, parallelizable, interruptible, or restartable. When invoked over Windows PowerShell remote management, workflows can manage multiple remote computers or devices at the same time.

Disconnected Sessions
Windows PowerShell sessions can be disconnected from the remote computer, and reconnected later from the same computer or a different computer without losing state or causing running commands to fail.

Robust Session Connectivity
Remote sessions are resilient to network failures and attempt to reconnect for several minutes. If connectivity cannot be reestablished, the session automatically disconnects, so that it can be reconnected after network connectivity is restored.

Scheduled Jobs
Windows PowerShell jobs can work with Task Scheduler to create jobs that run on a regular schedule, or in response to an event.

Delegated Administration
Commands can be run with a delegated set of credentials, so that users with limited permissions can run critical jobs.

Simplified Language Syntax
Simplified language syntax makes commands and scripts look a lot less like code and a lot more like natural language.

Cmdlet Discovery
Improved cmdlet discovery and automatic module loading make it easier to find and run any of the cmdlets installed on your computer.

Show-Command
Show-Command, a cmdlet and ISE Add-On, helps users find the right cmdlet, view its parameters in a dialog box, and run it.

A simplified provider development model
This new model brings down the cost of provider development and removes the dependency on COM.

A new Management Infrastructure (MI) Client API to perform standard CIM operations
This API can be used to interact with any standard CIM implementation over WS-Management, allowing management applications on Windows to manage non-Windows computers and devices.

Connections are more robust
Remote connections communicating over WinRM are more robust to transient network failures such as an inconsistent WAN connection. In the case of a complete network failure, connections are gracefully disconnected, and can be reconnected when network connectivity is restored.

Remoting is more Standards-compliant
Standard WS-Management operations, including Create and Delete, can be performed over WMI. Remoting for cmdlets written in native code using the new WMI provider development model uses WS-Management instead of DCOM.

Multiple Windows PowerShell sessions can be shared in the same process
Windows PowerShell sessions from the same user to the same session configuration (WinRM plug-in) can run in a single shared process instead of separate processes. This improves scalability and performance by allowing multiple sessions to share memory and other server resources.

Before installing Windows Management Framework 3.0 on Windows Server 2008, you must download and install the version of Windows Management Framework which includes Windows PowerShell 2.0, WinRM 2.0, and BITS 4.0 as a prerequisite. This version of Windows Management Framework is available at http://support.microsoft.com/kb/968929.